F0/100
LONDON CITY PWS — Water Quality Report 2026
Serving 10,256 people · Ohio
Water Source
Groundwater
County
—
System ID
OH4900712
Violations
41
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 50.00 mg/L | 1.30 mg/L | Over Limit |
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
5
Violations (last 5yr)
1
Unresolved
1
Health-Related
TIER 3Unresolved
Surface water treatment technique failure
TIER 3Resolved
Surface water treatment technique failure
When: January 25, 2024 – June 13, 2024Enforcement: Resolving — corrective action underway
TIER 3Resolved
Failed to conduct Level 1 Assessment
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: July 21, 2023 – July 31, 2023Rule: Consumer Confidence RuleEnforcement: Resolving — corrective action underway
TIER 1 — URGENTResolved
Maximum Contaminant Level Violation
When: July 1, 2022 – July 28, 2022Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Surface water treatment technique failure
When: January 1, 2022 – June 13, 2024Enforcement: Resolving — corrective action underway
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Frequently Asked Questions About LONDON CITY PWS
Is LONDON CITY PWS water safe to drink?
LONDON CITY PWS water receives a grade of F (0/100), which is considered failing. 1 contaminant(s) exceed EPA legal limits and 41 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has LONDON CITY PWS detected?
32 contaminants were tested in LONDON CITY PWS's water. Notable contaminants include Copper (90th percentile), Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).
Does LONDON CITY PWS have any EPA violations?
Yes, LONDON CITY PWS has 41 EPA violation(s) on record, with the most recent in 2024. Violation types include Other, MR, MCL. 15 are health-based violations.
How many people does LONDON CITY PWS serve?
LONDON CITY PWS serves approximately 10,256 people, Ohio.
What type of water does LONDON CITY PWS provide?
LONDON CITY PWS sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is OH4900712.
How does LONDON CITY PWS compare to other utilities in Ohio?
LONDON CITY PWS scores 0/100 with a grade of F (failing). This score suggests significant water quality concerns relative to other utilities. Visit our Ohio state page for a full comparison of water systems.